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Schedule39High7.1VulnerabilityCVE-2026-87681No patch link observed

CVE-2026-87681 — An Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1.

Published Oct 8, 2026, 01:16 AM UTCIngested 20h agoSource NVD(cve-db)CVE-2026-87681

Description

An Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1. When processing certain management protocol operations, the RBAC engine incorrectly categorizes non-standard action opcodes during permission checks. This allows authenticated users with read-only management privileges to bypass access controls and execute restricted administrative operations.

CVSS v4.0 base metrics

CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
7.1

High severity

Band computed from the CVSS base score, not the source's own label — so it means the same thing across every feed.

AV

Adjacent

Attack Vector

AC

Low

Attack Complexity

AT

None

Attack Requirements

PR

Low

Privileges Required

UI

None

User Interaction

VC

Low

Confidentiality (Vulnerable System)

VI

High

Integrity (Vulnerable System)

VA

High

Availability (Vulnerable System)

SC

None

Confidentiality (Subsequent System)

SI

None

Integrity (Subsequent System)

SA

None

Availability (Subsequent System)

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